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Preparation of multi-arm carbon nano-tube lubricant additive

A multi-arm carbon nanotube and lubricating oil additive technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problem of less CNTs, and achieve the effects of not easy to decompose, improve dispersibility, and easy to operate in the preparation process

Inactive Publication Date: 2009-07-01
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there are few studies on CNTs in the field of friction, and the reports are limited to using CNTs as solid lubricants, or examining their lubricating properties through physical blending in dispersed phases.

Method used

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  • Preparation of multi-arm carbon nano-tube lubricant additive

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Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Polystyrene-modified carbon nanotube lubricant additives:

[0027] 1. Disperse 2 grams of MWCNT into 30 ml of concentrated nitric acid, acidify by reflux for 20 hours, wash until neutral, and dry to obtain 1.3 grams of MWCNT-COOH. Add 1 g of MWCNT-COOH to 25 ml of SOCl 2 React at 70°C for 24 hours, distill off residual SOCl 2 , the residue was immediately reacted with 40 ml of purified ethylene glycol at 120° C. for 48 hours. After centrifugation and drying, 0.9 g of MWCNT-OH was obtained. 0.6 gram of MWCNT-OH and 2.8 g of chain transfer agent CPAD were dissolved in 25 ml of anhydrous methylene chloride, 2.3 g of DCC was added, and the mixture was reacted in the dark at room temperature for 24 hours and then centrifuged, washed and dried to obtain 0.6 gram of MWCNT-SC (S ) Ph.

[0028] 2. Add 0.08g of MWCNT-SC(S)Ph, 1g of styrene and AIBN (0.1mL of 0.5M DMF solution) into 4ml of DMF, and the mixture is vacuumed and nitrogen-filled, then stirred and reacted at 100°C ...

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Abstract

The invention discloses a method for preparing a multi-arm carbon nanotube lube additive. Through solid load of a chain transfer agent on the surface of a multi-arm carbon nanotube, the method carries out active polymerization on different monomers to obtain functionalized multi-arm carbon nanotubes modified by different polymers. The preparation process is simple and easy to operate; the prepared multi-arm carbon nanotube lube additive has good thermal stability and mechanical stability, and can greatly improve dispersion of the carbon nanotube in lube. The lube additive utilizes the rigid carbon nanotube as a nuclear structure and plays a role in bearing; long-chain macromolecule plays a role in abrasion reduction due to the flexibility and viscoelasticity of the macromolecule and realizes the conversion from sliding friction to rolling friction microscopically; therefore, the lube additive shows excellent abrasion resistance and is expected to solve the problem of lubrication of a mechanical material.

Description

technical field [0001] The invention relates to a preparation method of a functionalized multi-arm carbon nanotube lubricating oil additive. Background technique [0002] According to the calculation of Professor Vogelpohl from Germany, 1 / 3 to 1 / 2 of the world's production energy is lost due to friction and wear. In recent years, Professor Jost from the United Kingdom also pointed out that 30-40% of global energy consumption is consumed by friction and wear. Lubricants with excellent performance can make the machine fully lubricated, thereby improving the efficiency of the machine, reducing energy consumption and prolonging the life of the machine. Therefore, improving lubricating performance to reduce friction, reduce wear and prevent sintering is of great significance to the national economy. [0003] The application of nanomaterials in lubrication systems is a new research field developed in recent years. Due to the characteristics of large surface area, high diffusivit...

Claims

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Application Information

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IPC IPC(8): C09C3/08C09C1/44C10M159/12
Inventor 郝京诚裴小维刘维民方建
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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